[Comparative study on ultrastructure of rhabdomyosarcoma and embryonal striated muscle].
Twelve cases of rhabdomyosarcoma identified by electron microscopy were studied. Of them, 6 were diagnosed originally as rhabdomyosarcoma and 6 as other tumors by light microscopy. Five types of tumor cells, primitive mesenchymal cells, undifferentiated myoblasts, poorly differentiated myoblasts, well-differentiated myoblasts and leptomeric fibril myoblasts were observed under electron microscope. Striated muscle tissue from 5 cases of 5-8 week old human embryo was used as control. There was a correlation in differentiation between rhabdomyosarcoma and embryonal striated muscle. Based on their fine features, the diagnosis of rhabdomyosarcoma is discussed.
Hang
Z B
ZB
West China Medical College, Chengdu.
D000293:Adolescent; D000328:Adult; D002675:Child, Preschool; D005260:Female; D006258:Head and Neck Neoplasms / Q000648:ultrastructure; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000196:embryology / Q000648:ultrastructure; D012208:Rhabdomyosarcoma / Q000648:ultrastructure*; D013736:Testicular Neoplasms / Q000648:ultrastructure